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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 28, Iss. 8 — Aug. 1, 2011
  • pp: 1851–1854

High resonant transmission contrast filter based on the dual side-coupled cavities plasmonic structure

Qiaodong Huang, Ruisheng Liang, Pixin Chen, Shun Wang, and Yi Xu  »View Author Affiliations


JOSA B, Vol. 28, Issue 8, pp. 1851-1854 (2011)
http://dx.doi.org/10.1364/JOSAB.28.001851


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Abstract

By using indirect coupling between two side-coupled cavities, we propose a method to enhance the resonant transmission contrast ratio in the lossy metal–dielectric–metal waveguide cavity system. We find that the dual side-coupled cavity structure has higher on-resonance transmission contrast ratio than the single side-coupled cavity structure for involving more coherent interfering paths. The filter operating around the wavelength of 1550 nm is analyzed based on coupled-mode theory, and the optimal on-resonance transmission contrast condition is obtained. Numerical experiments confirm the enhancement of the resonant contrast.

© 2011 Optical Society of America

OCIS Codes
(120.2440) Instrumentation, measurement, and metrology : Filters
(240.6680) Optics at surfaces : Surface plasmons
(230.4555) Optical devices : Coupled resonators

ToC Category:
Optical Devices

History
Original Manuscript: February 8, 2011
Revised Manuscript: May 25, 2011
Manuscript Accepted: May 26, 2011
Published: July 7, 2011

Citation
Qiaodong Huang, Ruisheng Liang, Pixin Chen, Shun Wang, and Yi Xu, "High resonant transmission contrast filter based on the dual side-coupled cavities plasmonic structure," J. Opt. Soc. Am. B 28, 1851-1854 (2011)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-28-8-1851

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